How to find Reverse Percentages. Note that this is the opposite of finding percent change using the standard equation. Method 2 Step 1.
Divide the New Value by the Old Value you will get a decimal number Step 2.
Divide the New Value by the Old Value you will get a decimal number Step 2. Then in column B you enter A 17 the result would be 9346. If the percentage is an increase then add it to 100 if it is a decrease then subtract it from 100. And it turns out that the discount 30 of 48695 1460850 is about 43 of the original price 4286 of 34087 1460969 a little off due to rounding.